SU1660217A1 - Multifrequency signal receiver - Google Patents
Multifrequency signal receiver Download PDFInfo
- Publication number
- SU1660217A1 SU1660217A1 SU894666745A SU4666745A SU1660217A1 SU 1660217 A1 SU1660217 A1 SU 1660217A1 SU 894666745 A SU894666745 A SU 894666745A SU 4666745 A SU4666745 A SU 4666745A SU 1660217 A1 SU1660217 A1 SU 1660217A1
- Authority
- SU
- USSR - Soviet Union
- Prior art keywords
- input
- block
- output
- outputs
- inputs
- Prior art date
Links
Landscapes
- Analogue/Digital Conversion (AREA)
Abstract
Изобретение относитс к электросв зи. Цель - повышение помехозащищенности. Устройство содержит входной усилитель 1, N фильтров-интеграторов 21 - 2N, N амплитудных детекторов 31 - 3N, блок 4 выбора максимального сигнала, N ключей 51 - 5N, сумматор 6, пороговый блок 7, блок задержки 8, N вентилей 91 - 9N, блок синхронизации 10. Устройство имеет возможность обрабатывать сигналы любого многочастотного кода с основанием N. Это достигаетс за счет того, что блок 4 фиксирует на своих выходах ровно такое количество наибольших по уровню сигналов из числа N принимаемых подканалов, какое требуетс в данном многочастотном коде M из N. Повышение помехозащищенности достигаетс за счет того, что даже при выделении необходимого числа наибольших по уровню сигналов на выход устройства они выдаютс только в случае, если суммарное значение амплитуд этих выделенных сигналов не меньше заданного значени . 1 з.п.ф-лы, 2 ил.The invention relates to telecommunications. The goal is to increase the noise immunity. The device contains an input amplifier 1, N filter integrators 2 1 - 2N, N amplitude detectors 3 1 - 3N, block 4 select the maximum signal, N keys 5 1 - 5N, adder 6, threshold block 7, block delay 8, N gates 9 1 - 9N, synchronization block 10. The device has the ability to process signals of any multi-frequency code with base N. This is achieved due to the fact that block 4 captures at its outputs exactly the number of signals of the number N of subchannels that are required in this multi-frequency code M from N. Raising the number Exposure protection is achieved due to the fact that even if the required number of signals with the highest output level of the device is allocated, they are issued only if the total amplitude of these selected signals is not less than the specified value. 1 hp ff, 2 ill.
Description
От блокцЮFrom blockyu
От блоха 3iFrom flea 3i
От б/юкаЗFrom b / yukaz
От блока Зл1From block Zl1
К 8л 5, и 9,To 8l 5, and 9,
ба Sfu3tba sfu3t
KS/i KS / i
Claims (2)
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
SU894666745A SU1660217A1 (en) | 1989-03-27 | 1989-03-27 | Multifrequency signal receiver |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
SU894666745A SU1660217A1 (en) | 1989-03-27 | 1989-03-27 | Multifrequency signal receiver |
Publications (1)
Publication Number | Publication Date |
---|---|
SU1660217A1 true SU1660217A1 (en) | 1991-06-30 |
Family
ID=21436180
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
SU894666745A SU1660217A1 (en) | 1989-03-27 | 1989-03-27 | Multifrequency signal receiver |
Country Status (1)
Country | Link |
---|---|
SU (1) | SU1660217A1 (en) |
-
1989
- 1989-03-27 SU SU894666745A patent/SU1660217A1/en active
Non-Patent Citations (1)
Title |
---|
Авторское свидетельство СССР № 1284007, кл. Н 04 Q 1/46, 1985. * |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
US4737658A (en) | Centralized control receiver | |
MX9601995A (en) | Tone detector with improved performance in the presence of speech. | |
US3962645A (en) | Tone frequency detecting circuit | |
CA1124898A (en) | Pcm tone signal generator | |
US3780230A (en) | Multifrequency tone receiver | |
US3863030A (en) | Pcm tone receiver using digital spectrum analysis | |
KR0149759B1 (en) | Dtmf detector using dsp chip | |
US4599495A (en) | Apparatus for multifrequency signalling tone detection | |
NL7903346A (en) | DIGITAL SIGNALING SYSTEM. | |
SE7909903L (en) | MULTIPLE FREQUENCY DETECTOR | |
US4742534A (en) | Telephone receiving equipment for recognizing predetermined combinations of voice-frequency signalling components | |
SU1660217A1 (en) | Multifrequency signal receiver | |
US4479188A (en) | Digital detector for a multi-frequency code in an analog signal | |
US3806664A (en) | Tone receiver with detection of each tone in a precise frequency band | |
ATE89694T1 (en) | CIRCUIT ARRANGEMENT FOR DETECTING DUAL TONE MULTIFREQUENCY SIGNALS IN TELEPHONE EQUIPMENT. | |
US3445606A (en) | Multifrequency detection system including a frequency multiplying circuit | |
CA1092665A (en) | Multi-frequency signal receiver | |
SU1614130A2 (en) | Device for receiving multiple-frequency signals | |
SU482886A1 (en) | Analog-discrete information conversion device | |
SU1195475A1 (en) | Device for reception of multifrequency signals | |
SU1617667A1 (en) | Device for receiving multiple-frequency signals | |
SU928668A1 (en) | Bipulse signal receiver | |
SU886311A1 (en) | Conference communication device | |
SU1663784A1 (en) | Device for receiving multi-frequency signals | |
SU723789A2 (en) | Single-frequency audio signal receiver |